plant secondary materials play an important role in health and human nutrition. according to the importance of coneflower in the production of secondary materials and also the effect of nutrient on the amount of secondary materials, a pot experiment was conducted with a completely randomized design six treatments and three replications in sari university of agricultural sciences and natural res...

the susceptibility to terbacil of six randomly selected strawberry cultivars (‘aromas’, ‘chambly’, ‘harmonie’, ‘kent’, ‘la clé des champs’ and ‘seascape’) was analysed using chlorophyll florescence (cf) in comparison with visual observation, in an attempt to develop a method for use in a breeding programme to select herbicide-resistant strawberry lines. terbacil was applied at one of five rates...

The high-temperature hydrogenation of CF4 in mixtures and H2 is assumed to involve the reaction H + → HF CF3. hydrogen atoms here are either formed by F CF3 (i.e., products thermal dissociation CF4) with H2, or H2. In former case, a complicated chain process started, while proceeds more direct way latter. This article determines rate constant CF3, characterizing its transition state quantum-che...